Window frame and sash construction



H. E. CAMPBELL WINDOW FRAME AND SASH CONSTRUCTION Filed April 25, 1926 sSheets-Sheet 1 INVENTOR.

eev f. CAMPaELL ATTORNEYJ g H. E. CAMPBELL.

WINDOW FRAME AND SASH CONSTRUCTION 3 Sheets-Shoot 3 Filed April 25, 1926INVENTOR. fllEE/f Cq/Y/ BELL BY A TTORNEYS Patented Aug. 2-, 1927.

UNITED; STATES 1,637,732 PA ENT" F E-1.

HARRY E. CAMPBELL, F BALTIMORE, MARYLAND, ASSIGNOR TO CAMTBELL METALWINDOW CORPORATION, OF BALTIMORE, MARYLAND, A CORPORATION OF MABY- L mp.I

' jwmnow. rnnmn ANT) SASH CONSTRUCTION.

A'pplieationhled April 23,

The present'invention relates to windows of the type having openingsthrough the inner wall of the jamb, plates extending through suchopenings," and in which the.

functional relations between the sashes and the jambs take place behindthe'inner wall of the jamb.

I aim to provide a window which can be.

7 made i'elatively' cheaply and which will be particularlyweather-tight.

. out from the sash'plate, which lugs extend through second openings,through a partition in the jamb, either into the chain pockets or intoinner chambers as may be desired. The chain lugs are so arranged thatthe lugfor the lower sash is approximately at the bottom of that sash,and the lug for the upper sash is near the top. w The openings throughwhich these lugs pass. do not extend the entire height of the sash. Theone for the mg a direct passage of .air back ofthe n1;

lower sash lug extends up only for'the bot tom half of the jamb height,whereas the opening for the upper chain lug extends down for the upperhalf of the sash height. A limitation of lateral movement of the sashcan be taken care of by bending a portion of the sash plate at a rightangle so that it will rub either against the rear of the inner jamb wallor against either the inner or outer face of the partition formed withinthe jamb. As is now usual with windows of this type, means is providedfor preventner jamb wallfrofifiane opening in thejamb face to the otheropening. Since the'sashes have meeting rails which. overlap each otherat the middle of the window, when in closed position, the lower sashwill extend up somewhat above the top of the opening for the lower sashchain lug, and in the same way.

the upper sashwill go below the upper open- T33 building my window inthis way, the opening below the upper sash and above the lower sashcompletely closed when the window is closed, and there is no chance forany substantial leakage from one of these openings to the other, as forexample, t rough the holes for the sash chains: At the same time, if anycold air leaks in around the outer seal of either of the sashes, thiswill not build up an immediate pressure to forcecold air into the room,but will be I accomplish this result by having chain lugs extending.

1926. Serial No. 104,086.

cushioned not only by any space that maybe provided between the-innerjamb wall and the'partition in the jamb, but" also will be which Fig. 1is a section through a jamb taken on line 1- 1 of; Fig. 13; Fig, 2' is asimilar section on line 22 of Fig. 3; Fig. 3 is a face view offone jamb,the sashes, sill. and lintel being shown in section; Fig. 4 is a View ofone side of the window from inside of the room with certain parts brokenaway; Fig. 5 is a sectional View through one of the jambs on line 5 5 ofFig. 3;ai1d this figure also shows a detail of sill construction asitappears before the jambis'added to ,the sill; Fig.6 is a sectionalView throughthe sill with a connecting casting in place showing aportion of the drainage arrangement, Fig. 7 is an enlarged view-.(turned sideways) of the face. of the jamb at the midof the partsillustrated in Fig. 7; Fig.9 is a detailed face view of a filler blockusedin' the.;mid dle of the jamb; Fig. 10 is a side view-of the blockillustrated in Fig. 9; Fig.

through one'of the jambs'jFig. 12 is a sec tional view of the upper partof one of the dle of the window; Fig. 8 is a sectional view ll is'asectional view looking upward jambs on line 12-1.2 of Fig. 11; .andFigs.

tions of the sash-construction.

' In these drawings 20 is-the usual cove for the weight box, providedwith a hook v22 at the inner face. A stafl bead 24 may be made ofheavier metal than the cover 20 and-attached to "it. as by welding, orthe members 20 and 24 may be made of a single. piece of metal. .Themember 24. has a portion 26 which forms a part of the inner face -13 and14 are detail views of-certainporof the jamb and a part 28 bent inwardlyto form a sash guide. The angle between the portions'26 and 28preferably is slightly more than a right angle, so that only an edge ofportion 28 will press against the jamb plate. A cover plate 30 isprovided transverse movement of the lower portion of sponding to similarportion 28.

which is adapted to engage with a hook 22 and hasan inwardly bentportion 32 corre- In order to form a parting strip between the sashes, Iprovide two members 34 and 36 whichfare preferably identical in size andshape, but are inserted in reverse position. Each of these members is ofa length equal to substantially half the height of the jamb and is of anapproximate Z-shape, with the middle connecting bar of the Z forming anangle of slightly less than 90 with each of the adjacent portions.Members 34 and '36 may, if desired, be hot rolled sections, or they canbe bent from metal plates. Member 34, which is the lower of these twomemhers, is attached, as by screws 38, to portion a 26 of bead 24 andruns up from a connecting casting located near the sill (which will bedescribed hereafter) to the point where,

its upper edge is in a position just to be cleared by the lower edge ofthe upper sash when the upper sash is fully raised (see Fig. 3). Member36 isattached in the reverse but corresponding position to cover plate30 i and runs from the bottom face of the lintel down to the point whereits lower edge meets the upper edgeof member 34. The exposed joint ofthese two members may be covered by a rubbing block 40.

The lower sash 42 is provided with a plate 44 which, when the window isclosed, lies between an edge of member 34 and portion 32 of cover plate30. Near the bottom corner of this sash (see Fig. 13) I provide a chainlug 46 which may be welded to plate 44 by the use of a dovetailed jointas indicated in dotted lines in Fig. 13. Riveted to one face of chainlug 46 is an angle iron .48 which is adapted to run against the rearface of cover plate 30 (see Fig. 2) to limit the lower sash. Member 48is preferably bent so that the angle between the two legs is slightlygreater than a right angle. Since plate 44 extends up above member 34even when the window is closed, the upper edge 7 of this plate willalways be opposite a portion of member 36. In order to insure a closeconnection between these members, a slot is cut in the top of plate 44and a portion 50 is bent out just far enough to rub against member '36.The upper'sash 52 is provided with a plate 54, a-chain lug 56 locatednear the top of the sash, and an angle iron 58 (corresponding to theangle iron 48 of the lower sash) which is adapted .to rub against theinner'faoe of portion. 26-

of bead 24. It also has, at itslower edge, a bent-out portion 60(corresponding to the portion 50 on the upper edge of the lower sash)which makes contact with member 34.

It may be noted from Fig. 2 that when the window is closed, plate 54 ofupper sash 52 extends. down only to the top of member 34, and does notoverlap this member in the and the general position of which is shown inFig. 3. This casting is held in place immediately above the upper edgeof member 34 by a tie-plate 64 which is connected to both cover plate 30and portion 26 of bead 24. (The tie-plate 64 might be shown in Fig. 2but is there omitted for the sake of clarity.) Casting 62 has a mainbase portion 66 of the same thickness as members 34 and 36 so that itsinner face will be a direct continuation of the inner face of member 34and will serve to guide the bentout portion 60 of upper sash 52 onto theinner face of member 34. Toward the outside of the window, casting 62has a portion 68 'adapt edto fill the angle of curvature formed whenportion 28 is bent inwardly from bead 24. It also has a portion 70 whichextends up and meets the rear face of member 36. When the upper sash isclosed, plate 54 (insame way that the upper edgeof plate 44 eludingbent'portion 60) will entirely fill the slot formed" between portion 70of casting 62 and the edge of member 36, on one hand, and betweenportion 68 of casting 62 and portion 28 of bead 24 on the other hand;and thus the upward leakage of cold air around the sides of plate 54will be prevented.

Casting 62 also serves a highly useful function in assembling anddisassembling the window. If the window is assembled and it isdesired'to remove the sashes, cover plate 30 is first taken off and thelower sash swung inwardly. Member 36 is removed, and then screw 65 istaken out, which per- 'mits casting 62 to be swung inwardly along withthe upper sash, without disturbing member 34. Thus the clearance betweenmember 34 and portion .28 of bead 24 can be accuratelydeterniined and"fixed in the. factory. The clearance between cover plate 1 30 andmember 36 can be adjusted in the I The sill 71 which is of the generalshapeshown in a number of my earlier patents. has a ridge 72 inside ofwhich is a valley 74. Inside of the line of the face of each 'jamb, agroove 7 6 is formed through the ridge 72 so that the valley 74 maydrain outward. sills by the use of a casting. 78 illustrated in Thejambs are connected to the w v Figs. 5' and 6.. This casting coversgroove eanna 76 and has a portion 80 which extends do an back of thecasting 78 there is a raised flange 86 which continues around the sideat 88 and serves as a point of attachment for the cover 20. The baseportion 82 is'extended inwardly as shown at 90 in Fig. 5 so that it willunderlie portion 32 of cover plate 30. A fiange'9l. connects the mainbase portion 82 to the portion 92 which serves as a base for member34.This portion 92 extends ,towards the outside of a the window far enoughto contact with portion 28 of bead 24 and is shaped to fill the :angleof curva- 90 ture formed when this portion is bent inwardly. A bolt 96passes through flange 91 and is held in .placeby lock nut 98. This 'boltin turn passes through thelower portion of member 34 and by the aid oflock nuts 100, member 34 can either be moved back, or held in, asdesired. In order to take care of any water that may get into.

. the inside of the box 20, a small weep-hole 0 102 is provided in thelower corner of bead 3 24. v

The connection between the lintel 104 and the jamb face members isprimarily accomplished by the aid of an angle iron 106 (see Figs. 11 and12) to which the upper portion of member 36 isattached by a bolt andlock nuts, in the same way that lower portion of member 34 is attachedto lug 84 of casting 78. The pulleys 108 are hung from the underside ofangle iron 106. i

There are certain features about this window that deserve particularnote. When the Isashes are in a closed position, there is no'-' openingabove the lower sash which leads from the inside of the room either intothe chain pocket or into any portion of the jamb which is accessibleto'outside air. It further maybe noted that this window is so designedthat when it is subjected to heavy air pressure, as in a gale, thepressure will tend to tighten the window. Ordinars ily in windows of thetype having concealed chains and plates extending through openings inthe inner'wall of the jamb, outside f air pressure will tend' to forcethe lower sash inwardly, permitting cold air to enter the chainpocket ofthe lower sash and rise through the relatively large openings affordedby the chain pocket and come into .the room throu h the opening above'the pressure from the outsidecan force its way \into the jamb bypushing the lower sash in slightly, but there is practically no openingfor the air-to pass upwardly around the edge of the lower sash into theopening lower sash. In t e present arrangement, air

above the lower sash, and the harder .the wind blows, the more the lowersash will press'against portion 32 and cover-plate 3,0, to prevent theair from entering the room. It

will also be noted that when the "window is closed, relatively largecompression chambets are formed for both the upper and lower sashes, asany air which forces its way past the outside seals of these sashes,

will enter the -jamband chain pocket. This feature is of particularimportance in connection withpreventing any water from bemg forced mtothe "room, for any water that is carried past the outside seals willdrop out of the air due to the fact that the velocity will drop in thelarge compression chamber. This water will run down inside the jamb, andwill be forced out through weep-hole 102, at any time that the airpressure momentarily drops. In other words, I have a window which isrelatively cheap to manufacture, is carefully desi ed so as to berelatively-air-tight .and w ich contains particular provision to preventany water from being forced in; at the same time the window is very easyto operate. i

I It is to be understood that the foregoing details are given by way ofillustration only and that;they may be modified in many particularswithout departing from the spirit of my invention.

Certain of the features of this window which are .claimed broadly inthisapplication were disclosed in my earlier application, Serial N 0.83,999, filed January but are not now claimed therein.

What I claim is: 1. A window-frame and sash construction of the type inwhich the sash chains are behind the lnner faces of the lambs and inwhich thesashes are provide with plates extending into openings in" theinner face of the jamb; comprisin jambs having an opening for a lowersas which is entirely closed, above the middle of the window,

against the passage ofair into a weight chamber or into any inner partofthe jamb which may connect with the corresponding opening for theupper sash, and having an opening for an upper sash which is entirely cosed, below the middle of the window, against the passage of air intoany inner part ofthe jambwhich may connect with the corresponding sash.

2. A window-frame and'sash construction opening for the lower comprisinga jamb having two vertical openings between members forming the innerface of the jamb, respectively adapted to receive a lower and an uppersash, a partition in the jamb behind the opening for the lower sashrunningdown from the top of the jamb,. to about the middle thereof, an

opening below such partition leading back thereof, upperandlowver-sashesadapted to move in said first-menti0ned. openings, a..projecting"member adjacent the bottomof the lower sash. adapted toextend into the jamb beyond said partition and suspension 6 mechanismattached to said projecting member.

8. A device as specified in claim 2, fur-- ther characterized by having.a partition back of the opening for the upper sash which 1" extends upfrom the bottom of the jamb to about the middle thereof, and by having asuspension portion adjacent the top of the upper sash.

4:. A device as defined in claim 2, turl5 ther characterized by the factthat the sash plates include portions adapted to contact with jambmembers back of the inner face of the jamb to limit transverse movementof the sashes; j i

5. A window-frame and sash construction comprising jambs, an upper andlower sash adapted to move in the jambs, suspension mechanism comprisingpulley wheels within the jambs, and partitions within the jambs betweenthe room side of the upper half of the amb and the pulley wheels for thelower sash.

A 6. A construction as specified in claim 5 further characterized byhaving enlarged compression chambers which are adjacent the sides of thelower sash when the lower sash is in closed position.

7. A window-frame and sash construc-. tion comprising jambs, twoopenings between the members forming the inner wall of each jamb, sasheshaving plates extending through said openings, a chamber and channelswithin each jamb and connecting passages and partitions so arranged thatthe lower portion of the'opening for the lower sash leads into anenlarged compression chamber while the upper part leads into arelatively smaller channel and the upper part of the opening for theupper sash leads into an enlarged compression chamber while the lowerpart leads into a relatively smaller channel,

' 8. A window-frame and sash construction comprising two jambs eachcomprising two side members and an upper and lower parting-stripmemberwith openings betweenthe side members and. parting strip membersto receive the sashes, the upper-parting strip member serving to form apartition back of the upper portion of the opening for the lower sashand the lower parting strip mem-. ber serving to form a partition backof the lower portion of the opening for the upper sash, and upper andlower sashes adapted to move in said openings.

9. A construction as specified in claim 8,

in .which the lower; parting strip member does not overlap the uppersash when the upper sash is raised, and an auxiliary member removablewithout removing the lower-

